Shock absorber



Jue 17, 1924. 1,498,291 R. A. PHILOW SHOCK ABSORBER Filed Feb. 11, 1922 2 sheets-shea 1 rfunuuj June 17, 1924. 1,498,291

` R. A. PHILOW SHOCK ABSORBER Filed Feb. ll. 1.9122 2 Sheets-Sheet 2 Rar Pfl/Law rai-@mea June 17, 1924.

UNITED STATES una.l

ROY A; PHILQW, 0F SAN FRANCISCO, CALIFORNIA. y

snoei; ABsoRBEn.

Application Ied February 11, 1922. Serial No. 535,792.

To all whom t may concern.'

Be it known th'atI, ROY A. PHILow, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements' in Shock Absorbers, of which the following is a specification.

My invention is a shock absorber for automobiles, particularly applicable to automobiles which are mounted on cantilever springs, but is also applicable to automobiles mounted on other types of springs. The purpose of my invention isfto provide a shock absorber of this character which is highly efficient in operation and which will in general improve the riding qualities of the automobile.

Referring to the n annexed drawing in which my invention is illustrated and which forms a part of this specication:

Figure 1 is a side view of my shock absorber applied to the rear axle and cantilever spring of an automobile.

Figure 2 is a side view of my shock ab sorber applied to the front axle and cantilever spring of an automobile.

Figure 3 is a side view of my shock absorber applied to a semi-elliptic springand the chassis of an automobile.

Figure 4 is a plan view of the radius rod connecting plate.

Figure 5 is a plan view of the spring end connecting plate for l a rear automobile spring.

Figure 6 is a plan view of'the spring end connecting plate for a front automobile spring.

Figure 7 is a side view of a modified form of my shock absorber.

Referring to Figures 1 and 2 of the drawl ing, 1 indicates a radius rod connecting plate which is triangular in sha e provided with an aperture 2 in its forwar corner and with apertures 3 in its rear 4corners and formed with depending knuckles 4 at its rear edge. Said plate is secured to the under side of the fixed end of either the rear or front cantilever springs 5 or 6 of an automobile by the bolts 7 and 8 and nuts 9 and 10 which screw on the lower ends of said bolts, which bolts and nuts secure said end of said springs to the automobile body, said bolts 7 and 8 extending through the holes 2 and 3 respectively. A toggle 11 is connected to the knuckles 4 and one end of a radiusrod 12 is connected to said toggle.

In the form of my invention shown in Figure 1 a yoke 13 extends upwardly over the rear axle 14 'of the automobile and the 4collar 15 on said axle, and is secured to the iianges 16 of said collar by bolts'17 and nuts 18, which bolts extend through flanges19 bent outwardly from the upper ends of said yoke. The rear end of radius rod'12 is secured to flange 16 by bolt 17 and nut 18. Knuckles 21 are formed on the under side of the lower member of the yoke 13 to which is pivotally connected one end of an angular lever 22. A spring end connecting plate 23 is formed with knuckles 24 on its "upper side, and with an embossment 25 on its lower sideat its rear edge and is provided with four holes 26 in its corners respectively. The plate 23 rests upon the rear end of the automobile spring 5, the emboss'ment 25 fitting in a depression 25 in the extremity of said spring whereby the plate is properly positioned on the spring and is prevented from slipping olip the end `of the spring. U-shaped bolts 27 extend under the spring 5. and upwardly around the side edges thereof and through the holes 26 in plate23` and nuts y28 screw on the upper ends of saidy bolts against said plate to holdy the plate on the spring. An` angular lever 29 is pivotally connected at one end to the knuckles 24, the other end thereofbeing connected lpivotally to the other end of lever 22 by pivot 30.

On the levers 22 and 29 are formed rearwardly projecting arms 31 and 32 respectively. A rod 33 extends loosely through the ends of the arms 31 and 32 on which rod are collars 34, 35, 36, 37, 38 and 39. vThe collars 35 and 36 engage the lower and upper sides respectively of the arm 31. The collars 37 and 38 respectively engage the lower and upper sides ,of the arm 32. Nuts 40 and 41 screw on the lower and upper ends of the rod33 respectively against the collars 34 and 39. Springs 42, 43 and 44 surround the rod 33 respectively between the collars 34 and 35, the collars 36 and 37, and the collars 38 and 39, which springs are brought under tension during` relative movement of the axle 14 and spring 5.

The form of my invention shown in Fig. 2 is the same as that shown in Fig. 1 with the exception that a spring end plate 45 is substituted for the plate 21 and the flanges 19 of the yoke 13 are bolted by the bolts 17 and nuts 18 to ears 46 on the front axle 47 of the automobile, while the radius rod 12 instead of being connected to the yoke 13 is secured to the ear 46 on the forward side of the front axle 47 by the bolt 17 which extends through said ear and the nut 18 which screws on said bolt.

The plate has a pair of knuckles 5.0 on its upper side, an embossment 51 on its under. side near its forward edge, a rabbet 52 in its under side extending from the rear edge thereof, a notch 53 in its rear edge, a transverse slot 54 midway of its ends and holes 55 in its corners respectively.v The forward part of said plate rests upon the forward end of the second leaf of spring G and the embossment 51 rests upon the lower leaf while the forward end of the next leaf fits in under the plate in rabbet 52 and is bent upwardly at its forward edges at 57 which fits inslot 54, and the forward end of the next leaf fits in notch 53. U-shaped bolts 58' extend under the spring 6 and upwardly against the side edges thereof through the holes 55 in plate 45 and nuts 59 screwon the upper ends of saidy bolts against the plate. The rear end of the lever 29 is pivotally connected tothe knuckles 50.

In the form of my invention shown in Fig. 3 the lever 22 is pivotally connected at 60'to the end of the semi-elliptic spring 61 while the lever 32 is pivotally connected at 62 to the end of the automobile chassis 63. The levers 22 and 29 and their arms. 31 and 32 are made inthe proper form to be operatively connected to said spring 61 and said chassis 63.

'In the modified form shown in Fig. 7, the springs arein a horizontal position with the pivot 30 slightly below the pivot 60.

Having described my invention, claim:

1. A shock absorber comprising a yoke, means fory connecting said yoke around. the rear axle of an automobile, a radius rod connected at one end to said yoke, a plate connected to the `fixed end of an automobile cantilever spring and to said radius rod, a lever pivotally connected to said yoke, a plate connected to the spring end of said spring, a lever pivotally connected to said latter plate, said levers being pivotally connected 'to each other, arms extending ref spectively from said levers, a rod extending loosely through the ends of said arms, a

spring surrounding said rod between saidl arms, two springs on said rod Vbearing respectively against said arms and collarsl on the ends of said rod against which the outer ends of saidtwo springs bear respectively.

2. A shock absorber comprising a yoke, means for connecting said yokey around the front axle of an automobile, a plate connected to the `lixed end of an automobile cantilever spring, a radius rod 'connected to said plate and to said front axle, a plate mounted on the spring end of said cantilever spring, the forward part of said plate rest,- ing on the end of the lower leaf of said spring, the under side of said plate being rabbeted to receive-the next leafl of said spring, and provided with a slot to receive the end of said next leaf, said plate being notched in its rear edge to receive the end of the next leaf of; said spring, said plate having holes, U-boltsextending around said spring throughtheholesf in said plate, nuts on the ends of said bolts engaging said plate, a lever pivotally connected to said plate, a lever pivotally connected to said yoke and pivotally connected to saidy firsty lever, arms respectively on said levers, a rod projecting loosely through said, arms, a spring surrounding said rod "between said arms, two springs on said rod bearingre'- spectively against said arms and collars on the ends of said rod'against which theouter ends of said two springs bear respectively.

In testimony whereof I aiiix my signature.

' ROY A. PHILOYV. 

